Description
General Description
Stearic Acid-PEG-FITC (SA-PEG-FITC) is a multifunctional lipid-PEG conjugate composed of stearic acid (C18:0), a polyethylene glycol (PEG) spacer, and a terminal fluorescein isothiocyanate (FITC) fluorophore. The hydrophobic stearic acid anchor readily inserts into lipid bilayers, liposomes, micelles, lipid nanoparticles (LNPs), and other lipid-based nanocarriers, while the PEG spacer improves aqueous solubility, colloidal stability, prolonged circulation, and biocompatibility.
FITC is one of the most widely used green fluorescent dyes for fluorescence microscopy and flow cytometry. The strong green fluorescence of SA-PEG-FITC enables sensitive visualization of lipid-based nanocarriers, cellular uptake, intracellular trafficking, biodistribution, and surface modification.
Stearic Acid-PEG-FITC is widely used for fluorescent labeling of liposomes, lipid nanoparticles, polymeric micelles, extracellular vesicles, and other nanomaterials in drug delivery, diagnostics, molecular imaging, and biomaterials research.
Applications
- Fluorescent liposome labeling
- Lipid nanoparticle (LNP) tracking
- Polymeric micelle imaging
- Cellular uptake studies
- Fluorescence microscopy
- Confocal microscopy
- Flow cytometry
- Biodistribution studies
- Nanoparticle surface engineering
- Biomaterials research
Features and Benefits
- Hydrophobic stearic acid anchor
- Hydrophilic PEG spacer
- Bright FITC green fluorescence
- Excellent photostability
- Easy incorporation into lipid membranes
- Excellent aqueous dispersibility
- Outstanding biocompatibility
- Research-grade quality
